Device for bolting up double windows connected with one another



Nov- 20, 19 5- J. E. LUNDHOLM 2,389,375 DEVICES FOR BOLI'I'NG UP DOUBLE WINDOWS CONNECTED WITH ONE ANOTHER Filed Feb. 4, 194:5 2 Sheets-Sheet {1 INVENTOR JOSEF ENAR LUNDHOLM f], ATTQRNELKS.

Nov.20, 1945. E, L N HQLM 2,389,375

DEVICES FOR BOLTING UP DOUBLE WINDOWS CONNECTED WITH ONE ANOTHER Filed Feb. 4, 1945 2 Sheets-Shei 2 I NVENTOR= JOSEF ENARL/UNDHOLM I ATILORNEYS.

Patented Nov. 20, 1945 UNITED STATES PATENT OFFICE DEVICE FOR- BOLTING UP DOUBLE WIN- DOWS CONNECTED WITH ONE ANOTHER Josef Enar Lundholm, Stockholm, Sweden Application February 4, 1943, Serial No. 474,667 In Sweden June 13, 1941 lock under the pressure of a spring, or of socalled eccentric locks containing essentially two parts, which interlock in the closed position and are moved from one another when they are openedso that in this way both windows are pressed from one another. Spring catches or fasteners having a cylindrical body and a headed projection provided with an annular groove behind said headed projection adapted to engage a spring, are often referred to as press-studs and the term press-studs will hereinafter be used to define such spring catches.

Press-studs are inexpensive and may be easily fitted; besides, it is possible to open and also to lock several press-studs simultaneously. However, they are not reliable, as it is possible under certain circumstances for them to become easily loosened. Eccentric locks are reliable, but the manufacture of these locks is complicated and their operation is troublesome, as, where windows are provided witha plurality of eccentric locks, these locks when not interconnected can only be opened and locked separately one after the other. This construction is especially undesirable in construction where the eccentric locks are fixed on the windows in high positions, or at such parts of a window which are not within reach.

According to the present invention, the disadvantages of both interlocking devices can be eliminated in a simple manner by combining an eccentric lock with one or several press-studs. In this way it is possible to produce a reliable 7 and inexpensive interlocking system, which may be easily operated and for which, if the window is not too large, a single eccentric lock is adequate for the purposes intended and which may be fixed at an easily accessible part of the window.

In order to facilitate the opening of the pressstuds by means of the eccentric lock it is possible to arrange a projection adjacent to the pressstuds in a gap connecting the space between both windows with the atmosphere, which projection serves as fulcrum to both windows, when the windows are pressed from one another by means of the eccentric lock. Thus, the eccentric lock need only exert a relatively small amount of force in order to open the press-studs. The eccentric lock may consist of a two-armed lever fixed at one window sash frame, which lever may be turned in the gap between both window sash frames. Said lever is provided at one end with a handle and at its other end with a catch, which when being turned into the closed position, its hook-shaped end takes hold under a plate fastened to the other window sash frame, and

. in this way draws together and bolts u-p both windows, whereas, when the lock is opened, the catch is lifted up from the plate by means of its edge rising in the direction of the hookshaped end and thus presses the windows apart.

An example. of the bolting-up device according to the invention is illustrated on the accompanying drawings, in which View of the sash frames of a double window pro? vided with an eccentric lock and a single pressstud, and

Fig. 2 is a diagrammatic illustration of a side view of the sash frames of a double window provided with an eccentric lock in combination with two press-studs,

Figs. 3,.4 and 5 show in enlarged scale the eccentric lock in side, front and plan View,

Fig. 6 is a large section through both parts of the press-studs, whereas Figs. 7 and 8 are sections along the lines VlI-VII and VIII-VIII of Figs. Sand 7 respectively,

Figure 9 is a face view of the sash shown in Fi 1.

According to Fig. 1 the sash frames l, 2 of the double window are bolted up by means of an eccentric lock 3 and a press-stud 4. p

In order to facilitate the opening of the pressstud 4 a screw 6 is provided in the gap 5 between the two frames I, 2 and adjacent the press-stud 6, which screw serves as fulcrum to the frames 1,.2, when the windows are pressed apart by means of the eccentric lock 3." According to Fig. 2, the eccentric lock 3 is disposed between two press-studs 4, adjacent each of which a screw 6 is fixed in the same manner as in Fig. 1.

It is also possible to provide morethan one eccentric lock 3 if it should be found necessary, for instance on high or broad windows.

According to Figs. 3-5 the eccentric lock consists of a plate 8 inserted in the window sash frame I and fastened thereto by means of screws 1. A double-armed lever 9 mounted on the plate I2 the outer edge of which rises in the directionof the hook-shaped end I2. A plate I5 is fixed at the frame 2 by means of screws Id. The correct position of the plate 8 with respect to the plate 15 can be attained by meahsofa'guiding and centering pin (6, which formsthe fulcrum or turning point for the lever 9, and of a corresponding opening 11 in the plate 15;

The plate. I5 is provided with an aperture,-

which is limited by the three edges l8, l9 and Zl'l and isso arranged that the hook-shaped part I'Z of th'e catch H,- having-passed from this aperture into an fop'eningjl the frame 2, catches under the edge l3 andin this way draws together'and bolts up both windows, whereas, when the lock is opened, the edge l3 of the catch]! sli'des overthe-ed'ge 21%) bent downwards into the opening 2! and presses the windows alert.

Qhe part of the press studs "4 consists of a casing which-is formed as a dish-shaped body :21 provided withsaver-e1ate 2s and in which the catch-{spring 23 is inserted whereas the "omerpg'rt reformed bya plate 24supporting the "ZBSurrQuIIdin'g the pivot'25. Saidspring consists of a steel wire which extends along the greate t part of the-internal periphery of the dish 21, and the free operative ends form two elastic shanks 28, whichjlieonboth-sides of the centre of the dish somewna'tmthm the periphery pf anbpen'in'g'ill'l in the-dish?! and an opening =3: in the cover plate 28. -Atohue- 32 is pressed out of the bottom of the dish 27, which tongue serve s a distance a -enter for giving the correct'positicnanda certaiirtension to the shanks 29 when the "casing-22 is assembled. The coverplate M3 is pressed inwards on it-s periphery so that the spri'ng2'3 "is lield'fast, whereas its middle part :is so formed that the shanks 29 have sufficient room for operation.

For fixing the casing 22 at the frame I by finie'an's offscrews 33 holes 34 ahdtfiare provided in-the dish 21am the cover-plate 28 respectively,

which is pressed inwards around the h0le's35 in "order as form seats as for thesc'r'e'w heads. For holding the cover-plate 23 fast on the dish 21 before fixing the'casing '22 on th'e'flange 'l the rim 3! of the dishzl projects over the coverplate 28 and istiirned inwardly. The supporting plate 24 consists of adish-shaped m'ember 3a "and a cover-plate 39, are formed in'the same manneras the dish?! and the "cover-plate 28. 'A wire 40 of circular form serves as distance member between the dish 38 and thecoVer-plate 39, which retains'a "shoulder' ll of the pivot 25,

and sui'tably fcoinprises the'samematerial as the spring '23. For fastening 'the s'uppcrting plate 24 at the frame": by meanscf screws 42 holes 43 and are provided in the dish and the cover-plate respectively, which is pressed inwards around the holes 44 in order to form seats 45 for the screw heads. For holding the coverplate 39'fast in the dish 38 before fastening the ably longer than the distance between the bottom of thedish 21 and the cover-plate 28 so that the cylindrical part 41 enters the opening 30 before it leaves the opening 3|. The pivot 25 is elongated below the bottom of the dish 38 and ends in a point 48 serving to mark the correct pensio er the recess for the supporting plate 24 in the frame 2.

Having now particularly described the nature of my invention and the manner of its operation what I claim is:

1. In combination, a pair of sashes connected with one another, an eccentric lock mounted between said sashes, a press-stud mounted between said sashes "adjacent to said lock, said lock including means for locking said sashes and means for pressing saidsashes and said pressstuds apart whensaid sashes are opened;

"2. In combination, a pair of'sashe's connected with one'another, an eccentric lock mounted between said sashes, a plurality of press-studs mounted between said sashes, adjacent to said lock, said lock including means for locking "said sashes and "means for pressing said sashes-and said p s u apa'it when said sashesare opened.

3. In combination, a pair of sashes connected withone another, an eccentric lock mounted between said sashes, a plurality of press-studs mounted between said sashes, adjacent tosa'id lock, said lock being positioned between-at least two of said .press studs, said lock including means for locking saidsashes and meansfor pressing said sashes and said press-studs apart when said sashes are opened.

4. In combination, a pair. ofs'ash'es connected with one another, an eccentric lock mountedbetween said sashesa press-stud mounted "between said sashes adjacentto said lock, a projection mounted upon one f'of said sashes serving as a stop between said sashes, and said press-stud being positioned between-said stop projection and Said lock, said lock including means for locking said sashes and rneans for pressing said sashes and said press st'uds apart'when'said sashes are opened. I

5. In combination, a pair of sashes connected with one another, and having a gap thereb'et'ween, an eccentriclock mounted between said sashes, apres's-studmounted between said sashes adjacent to seamen-said lock cohsi'stihg'of a two-armedlever having a handle and anchorlike catch fastened to one sash, a plat'e having a recessed portion for engaging sa-id anchor like catch fastenedto the other sash; whereb'ys'aid eccentric lock --servs to lock and unlock said sashes while "at the same time fastening and fastening said press-stud, V

JOSEF ENAR LUNDHOLM. 

